1) Diva von Stade 2) Feminine given name 3) Italian girl name 4) The Bodley Head book 
[given name] Frederica is a feminine given name meaning `peaceful ruler.` It is closely related to the masculine name Frederick, of Germanic origin. Its meaning is derived from the Germanic word elements frid, or peace, and ric, meaning `ruler` or `power.` ==Variants== ...
a female given name: derived from Frederick.